SIST EN 50524:2021

SLOVENSKI STANDARD
SIST EN 50524:2021
01-november-2021
Nadomešča:
SIST EN 50524:2010
Predstavitev tehničnih podatkov za fotonapetostne razsmernike
Data sheet for photovoltaic inverters
Datenblattangaben für Photovoltaik-Wechselrichter
Fiche technique pour les onduleurs photovoltaïques
Ta slovenski standard je istoveten z: EN 50524:2021
ICS:
27.160 Sončna energija Solar energy engineering
SIST EN 50524:2021 en,fr
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 50524:2021

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SIST EN 50524:2021

EUROPEAN STANDARD EN 50524

NORME EUROPÉENNE

EUROPÄISCHE NORM
September 2021
ICS 27.160 Supersedes EN 50524:2009 and all of its amendments
and corrigenda (if any)
English Version
Data sheet for photovoltaic inverters
Fiche technique pour les onduleurs photovoltaïques Datenblattangaben für Photovoltaik-Wechselrichter
This European Standard was approved by CENELEC on 2021-07-26. CENELEC members are bound to comply with the CEN/CENELEC
Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.
Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC
Management Centre or to any CENELEC member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the
same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,
Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the
Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.



European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2021 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
 Ref. No. EN 50524:2021 E

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SIST EN 50524:2021
EN 50524:2021 (E)
Contents Page
European foreword . 3
1 Scope . 4
2 Normative references . 4
3 Terms and definitions . 5
3.1 Input side (PV - generator) . 5
3.2 Output side (Grid connection) . 6
3.3 Optional parameters . 7
4 Data sheet information . 9
4.1 General . 9
4.2 Short description. 9
4.3 Conformity . 9
4.4 Electrical parameters . 9
4.4.1 General . 9
4.4.2 Input parameters . 9
4.4.3 Output parameters . 9
4.4.4 Optional parameters .10
4.5 Characterization of the operating performance .10
4.6 Safety .12
4.7 Operating conditions .12
4.8 Fitting and construction .12
4.8.1 Physical characteristics .12
4.8.2 Other characteristics .12
Bibliography .13
Figures
Figure 1 — Representation of the inverter efficiency . 10
Figure 2 — Power reduction with increased ambient temperatures . 11
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SIST EN 50524:2021
EN 50524:2021 (E)
European foreword
This document (EN 50524:2021) has been prepared by CLC/TC 82 “Solar photovoltaic energy
systems”.
The following dates are fixed:
• latest date by which this document has to be (dop) 2022-07-26
implemented at national level by publication of an
identical national standard or by endorsement
• latest date by which the national standards conflicting (dow) 2024-07-26
with this document have to be withdrawn
This document supersedes EN 50524:2009 and all of its amendments and corrigenda (if any).
EN 50524:2021 includes the following significant technical changes with respect to EN 50524:2009:
— name plate requirements removed;
— revised list of electrical parameters to be indicated;
— information requirements for systems using external DC/DC converters included;
— maximum noise emission value harmonized with measuring method specified in EN 62109-1.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC shall not be held responsible for identifying any or all such patent rights.
Any feedback and questions on this document should be directed to the users’ national committee. A
complete listing of these bodies can be found on the CENELEC website.
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SIST EN 50524:2021
EN 50524:2021 (E)
1 Scope
This document describes data sheet information for photovoltaic inverters in grid parallel operation.
The intent of this document is to provide minimum information required to configure a safe and optimal
system with photovoltaic inverters.
In this context, data sheet information is a technical description separate from the photovoltaic
inverter.
NOTE The name plate is a sign of durable construction at or in the photovoltaic inverter. Its content can be
found in an earlier version of this standard. For the sake of unique definition, it is sufficient defined in EN 62109-1
and EN 62109-2.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments)
applies.
EN 50530, Overall efficiency of grid connected photovoltaic inverters
EN 60529, Degrees of protection provided by enclosures (IP Code) (IEC 60529)
EN 60664-1, Insulation coordination for equipment within low-voltage systems - Part 1: Principles,
requirements and tests (IEC 60664-1)
EN IEC 60721-3-3, Classification of environmental conditions - Part 3-3: Classification of groups of
environmental parameters and their severities - Stationary use at weatherprotected locations
(IEC 60721-3-3)
EN IEC 60721-3-4, Classification of environmental conditions - Part 3-4: Classification of groups of
environmental parameters and their severities - Stationary use at non-weatherprotected locations
(IEC 60721-3-4)
EN 61683, Photovoltaic systems - Power conditioners - Procedure for measuring efficiency
(IEC 61683)
EN 62109-1, Safety of power converters for use in photovoltaic power systems - Part 1: General
requirements
ISO 216, Writing paper and certain classes of printed matter - Trimmed sizes - A and B series, and
indication of machine direction
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SIST EN 50524:2021
EN 50524:2021 (E)
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— IEC Electropedia: available at https://www.electropedia.org/
— ISO Online browsing platform: available at https://www.iso.org/obp
3.1 Input side (PV - generator)
3.1.1
maximum input voltage
U
dcmax
maximum rated d.c. input voltage which the PCE is designed to withstand from the PV array
(i.e.maximum open-circuit voltage), under worst-case conditions of ambient temperature, irradiance,
etc.
[SOURCE: IEC 62109-1:2010, modified]
3.1.2
minimum input voltage
U
dcmin
minimum input voltage for the inverter to energize the utility grid, independent of mode of operation
3.1.3
start-up input voltage
U
dcstart
input voltage at which the inverter starts energizing the utility grid
3.1.4
rated input voltage
U
dc,r
input voltage specified by the manufacturer, to which other data sheet information refers
3.1.5
maximum MPP voltage
U
mppmax
maximum voltage at which the inverter can deliver its rated power in MPP mode
3.1.6
maximum operating voltage
U
opmax
maximum voltage at which the inverter can deliver its rated power
Note 1 to entry: U is used for non MPP inverters instead of U
opmax mppmax
3.1.7
minimum MPP voltage
U
mppmin
minimum voltage at which the inverter can deliver its rated power in MPP mode
Note 1 to entry: For inverters with independent inputs different Umppmin values may be needed for unbalanced
inputs.
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SIST EN 50524:2021
EN 50524:2021 (E)
3.1.8
Minimum operating voltage
U
opmin
minimum voltage at which the inverter can deliver its rated power
Note 1 to entry: Uopmin is used for non MPP inverters instead of Umppmin
3.1.9
maximum input current
I
dcmax
maximum current at which the inverter can operate. If the inverter has independent inputs, I is
dcmax
related to each single input
3.1.10
maximum short-circuit DC input current
I
scmax
absolute maximum total PV array short circuit current (DC) that the inverter is rated to have connected
to its input terminals, under worst-case conditions of ambient temperature, irradiance, etc
Note 1 to entry: This term is based on the term I in IEC 62109-1. It refers to the absolute maximum
sc, PV
current the DC input to the inverter is designed for under conditions of expected use. This differs from the simple
sum of the marked I ratings of the connected PV modules, since those markings are based on short-circuit
sc
conditions under standard test conditions and may be exceeded at te
...